"Let them eat cake" is the traditional translation of the French phrase "Qu'ils mangent de la brioche", supposedly spoken by "a great princess" upon learning that the peasants had no bread. Since brioche was a luxury bread enriched with butter and eggs, the quotation would reflect the princess's disregard for the peasants, or her poor understanding of their situation. While the phrase is commonly attributed to Queen Marie Antoinette, there is no record of her having said it.
Wikipedia.
Insert "Macron" for "Princess".

For those that do not know, NZ general police are not armed, but they have specialist armed squads, similar to UK really.
4 people arrested with the leader (at least) being Australian.
Too early to know much else, especially where the weapons came from.